* directory metadata and reduce network round-trips for directory operations.
 */
public class DirectoryLeaseState {

    /**
     * Private constructor to prevent instantiation of this utility class
     */
    private DirectoryLeaseState() {
        // Utility class - prevent instantiation
    }

    /**
     * Directory Read and Handle caching (RH) - recommended for directory operations
     */

 */
package jcifs.util;

import java.util.regex.Pattern;

/**
 * Comprehensive input validation utility for SMB protocol implementation.
 * Provides validation methods to prevent buffer overflows, injection attacks,
 * and other security vulnerabilities.
 */
public final class InputValidator {

    private InputValidator() {
        // Utility class
    }

 * - Uses ConcurrentLinkedQueue for O(1) operations
 * - Lock-free operations for better concurrency
 * - Proper buffer validation and limits
 */
public class BufferCache {

    /**
     * Private constructor to prevent instantiation of this utility class.
     */
    private BufferCache() {
        // Utility class - not instantiable
    }

    private static final int MAX_BUFFERS = Config.getInt("jcifs.smb1.smb.maxBuffers", 16);

 * SMB3 directory leasing is available and enabled.
 */
public class SmbFileDirectoryLeasingExtension {

    /**
     * Private constructor to prevent instantiation of this utility class
     */
    private SmbFileDirectoryLeasingExtension() {
        // Utility class - prevent instantiation
    }

    private static final Logger log = LoggerFactory.getLogger(SmbFileDirectoryLeasingExtension.class);

    /**

   */
  internal val isMultiplexed: Boolean
    get() = http2Connection != null

  /** Prevent further exchanges from being created on this connection. */
  override fun noNewExchanges() {
    withLock {
      noNewExchanges = true
    }
    connectionListener.noNewExchanges(this)
  }

  /** Prevent this connection from being used for hosts other than the one in [route]. */
  internal fun noCoalescedConnections() {

            throw new RuntimeCIFSException("Usage count dropped below zero");
        }
    }

    @Override
    protected void finalize() throws Throwable {
        try {
            // Add null check to prevent NPE if object was not fully constructed
            if (this.usageCount != null && this.usageCount.get() != 0) {
                log.warn("Tree handle was not properly released, performing emergency cleanup: "

    /**
     * Default maximum read/write size (1MB)
     */
    public static final int DEFAULT_MAX_READ_WRITE_SIZE = 1048576; // 1MB

    /**
     * Private constructor to prevent instantiation
     */
    private RdmaCapabilities() {
        // Utility class
    }

 */
package jcifs.ntlmssp.av;

import jcifs.internal.util.SMBUtil;

/**
 * NTLMSSP AV pair representing timestamp information in NTLM authentication.
 * Contains time-based data used to prevent replay attacks and ensure message freshness.
 *
 * @author mbechler
 */
public class AvTimestamp extends AvPair {

    /**
     * Constructs an AvTimestamp from raw byte data
     *

 */
package jcifs.internal.smb2.rdma;

/**
 * RDMA credit management for flow control.
 *
 * Credits are used to control the flow of messages between
 * RDMA peers to prevent buffer overflow.
 */
public class RdmaCredits {

    private int initialCredits;
    private int creditsGranted;

    /**
     * Create new RDMA credits manager
     */
    public RdmaCredits() {

    /**
     * Persistent handles have infinite timeout
     */
    public static final long PERSISTENT_TIMEOUT = 0;

    /**
     * Private constructor to prevent instantiation
     */
    private Smb2HandleCapabilities() {
        // Utility class
    }